{"product_id":"value-collection-581392pr-hex-socket-cap-screw-1-4-28-unf","title":"Value Collection 581392PR Hex Socket Cap Screw 1\/4-28 Unf","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe Value Collection 581392PR is a hex socket cap screw designed for precision fastening applications requiring a compact, high-strength connection. Threaded 1\/4-28 UNF with a 1\/4-inch length under the head, this fastener is fully threaded along its entire shank. It accepts a 3\/16-inch hex drive and is manufactured from alloy steel with a black oxide finish for corrosion resistance in moderate environments. This fastener meets ASME\/ANSI B18.3 and ASTM A574 standards, making it appropriate for mechanical assemblies, tooling fixtures, and equipment maintenance work across industrial and trade settings.\u003c\/p\u003e\u003cp\u003eThis cap screw fits applications where a low-profile, socket-driven fastener is required and where fine thread engagement is critical for vibration resistance or thin-material fastening. The 1\/4-28 UNF thread form provides tighter thread-per-inch spacing than coarse-thread equivalents, offering greater tensile strength per engagement depth. Typical uses include machinery maintenance, HVAC equipment panels, pump assemblies, and precision mechanical fixtures. This screw is sold individually with a minimum order quantity of 100 pieces.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1\/4-28 UNF fine thread for high-engagement strength and vibration resistance\u003c\/li\u003e\n\u003cli\u003eFully threaded shank allows maximum thread engagement across the full 1\/4-inch length\u003c\/li\u003e\n\u003cli\u003e3\/16-inch hex socket drive for use with standard Allen keys or hex bit drivers\u003c\/li\u003e\n\u003cli\u003eAlloy steel construction meets ASTM A574 mechanical requirements\u003c\/li\u003e\n\u003cli\u003eBlack oxide finish provides mild corrosion protection and reduces light reflection\u003c\/li\u003e\n\u003cli\u003eConforms to ASME\/ANSI B18.3 dimensional standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard ASME\/ANSI B18.3 hex socket cap screw suitable for use in any application requiring a 1\/4-28 UNF fully threaded fastener with a 3\/16-inch hex drive.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstall using a 3\/16-inch hex key or socket bit driver. Ensure mating threads are clean and free of debris before installation. Power down or de-energize any equipment before accessing fastened panels or assemblies. Alloy steel fasteners should not be substituted into applications specifying stainless or non-ferrous materials without engineering review.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-28 UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull or Partial Threading\u003c\/strong\u003e: Fully Threaded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Hex Socket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive Size\u003c\/strong\u003e: 3\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Black Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: ASME\/ANSI B18.3, ASTM A574\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: Value Collection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 581392PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51709867950386,"sku":"581392PR","price":1370.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/35eebf0f8eafd462c852ccc9c85b9bbe.jpg?v=1788461601","url":"https:\/\/voomisupply.com\/products\/value-collection-581392pr-hex-socket-cap-screw-1-4-28-unf","provider":"Voomi Supply","version":"1.0","type":"link"}